550 Four

1974 CB550K0 550 Four Engine Engine Type Air cooled, transverse four cylinder, four stroke, SOHC, wet sump Bore and Stroke 58.5 x 50.6 mm Valves 2 valves per cylinder Displacement 544 (33.2 cid) Compression Ratio 9.0:1 Fuel Delivery Four 22mm Keihin carburetors Ignition Breaker points and condenser Max Power 50 hp @ 8500 rpm Max. …